Siemens simatic hmi op27 Equipment Manual page 79

Recipes
Ingredients of a A recipe consists of a series of recipe entries. Each entry contains no more than
recipe one input field (tag).
The Mixture recipe might contain the following entries:
Data records on Values are assigned to the input field tags on the OP and stored. Together, these
the OP values form one data record of the recipe.
Several data records can be created for one recipe. This enables the fruit juice
system, for example, to produce drinks of different kinds. It uses a different
data record for each drink:
All data records are stored in the OP. Only the currently active data record is
stored on the PLC. This saves memory space on the PLC.
Identifying recipes
A recipe is created under a symbolic name in the configuration. The recipe is
also selected using this symbolic name on the OP.
8-2
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Name:
Orange:
Water:
Sugar:
Flavor:
Input fields (variables)
Name: Beverage
Orange: 90 l
Water: 10 l
Sugar: 1.5 kg
Flavor: 200 g
"Mixture" recipe Data record 1
entries
l
l
kg
g
Nectar Juice
70 l 95 l
30 l 5 l
1.5 kg 0.5 kg
400 g 100 g
Data record 2 Data record 3
OP27, OP37 Equipment Manual
Release 05/99